# 第八章
s = {1, 2, 3, 4}

ss = set('1234')
print(type(s))
print(type(ss))

s.add(6)
print(s)

s.pop()
print(s)

s.remove(4)
print(s)

tuple1 = ()
print(tuple)

tuple2 = (1, "a", 3, "hello", 2.2)
print(tuple)

tupl3 = (1,)
print(tuple)
print(type(tuple))

tuple1 = tuple('hello,world')
print(tuple1)

list1 = ['python', 'java', 'c++', 'c']
tuple2 = tuple(list1)
print(tuple2)

